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PopNx MCPMCP servers for people who use AI · explained in plain words

Cedulon

by dogrucanemek-altversion 0.17.0i★ –iRuns on your computer
Registry nameio.github.dogrucanemek-alt/cedulon

Install

Overview

Description from the maker (original English)

Policy-gated agent spend with signed receipts and rail-extract audit

PopNx MCP’s three pillars

These three are never merged into one score: opinions, measurements and popularity are different things.

What you can do with it

We have not written a plain-language summary for this one yet. Below are the facts we read from the registry.

  • Connection: Runs on your computer
  • Transport: stdio
  • Category: Other

Install

Pick the AI app you use, then copy the settings.

Before you install

  • Basic checks: 1 of 1 passed
  • Runs on your computer with your user’s permissions (files, network, apps).
  • You fill in yourself: CEDULON_STATE_PATH, CEDULON_MAX_AMOUNT, CEDULON_MAX_CUMULATIVE, CEDULON_MAX_PAYMENTS

You need

  • npmNode.js installed (for the npx command)

Which app do you use?

Pick your app above. We remember it, so next time the button says “Install in …”.

Open Claude Desktop → Settings → Developer → Edit Config, and paste this into claude_desktop_config.json

{
  "mcpServers": {
    "cedulon": {
      "command": "npx",
      "args": [
        "-y",
        "@cedulon/mcp-server"
      ],
      "env": {
        "CEDULON_STATE_PATH": "your-value",
        "CEDULON_MAX_AMOUNT": "your-value",
        "CEDULON_MAX_CUMULATIVE": "your-value",
        "CEDULON_MAX_PAYMENTS": "your-value"
      }
    }
  }
}

Run this in your terminal

claude mcp add cedulon --env CEDULON_STATE_PATH=your-value --env CEDULON_MAX_AMOUNT=your-value --env CEDULON_MAX_CUMULATIVE=your-value --env CEDULON_MAX_PAYMENTS=your-value -- npx -y @cedulon/mcp-server

Fill in the empty values before running it.

Open in Cursor

Or copy the settings yourself

Paste into .cursor/mcp.json in your project, or ~/.cursor/mcp.json

{
  "mcpServers": {
    "cedulon": {
      "command": "npx",
      "args": [
        "-y",
        "@cedulon/mcp-server"
      ],
      "env": {
        "CEDULON_STATE_PATH": "your-value",
        "CEDULON_MAX_AMOUNT": "your-value",
        "CEDULON_MAX_CUMULATIVE": "your-value",
        "CEDULON_MAX_PAYMENTS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

Open in VS Code

Or copy the settings yourself

Paste into .vscode/mcp.json in your project

{
  "servers": {
    "cedulon": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "@cedulon/mcp-server"
      ],
      "env": {
        "CEDULON_STATE_PATH": "your-value",
        "CEDULON_MAX_AMOUNT": "your-value",
        "CEDULON_MAX_CUMULATIVE": "your-value",
        "CEDULON_MAX_PAYMENTS": "your-value"
      }
    }
  }
}

Your browser asks to open the app, then the app shows the settings and asks you to confirm. Key values are left empty for you to fill in.

This one runs on your computer, and ChatGPT can only connect to servers on the internet. Pick another app.

Your choice stays on this device in a cookie; no account needed.

Values you fill in

  • CEDULON_STATE_PATH env
    Optional JSON file that persists the in-process ledger
  • CEDULON_MAX_AMOUNT env
    Per-payment amount cap (demo default 10)
  • CEDULON_MAX_CUMULATIVE env
    Window cumulative cap (demo default 30)
  • CEDULON_MAX_PAYMENTS env
    Window payment-count cap (demo default 3)

These settings are generated from the maker’s registry entry. If the README says otherwise, follow the README.

What it can do

Runs on your computer; the tool list appears in your AI app after you install it.

Basic checksi

We check information anyone can see; we have not read the code. Checks that do not apply are left out of the count. · Checked Nov 8, 2026

  • ✓ Pass

    Maker matches the repo

    The registry name was verified with the GitHub account dogrucanemek-alt, which owns the repo

  • … Not checked yet

    Still maintained

    We have not read this repo from GitHub yet

  • … Not checked yet

    Has a licence

    We have not read this repo from GitHub yet

  • – Not applicable

    Endpoint responds

    This one runs on your computer; there is no internet endpoint

  • – Not applicable

    Sign-in with OAuth

    Runs on your computer and uses local settings instead

  • … Not checked yet

    No hidden instructions in tool descriptions

    Runs on your computer; we can only read tool lists from internet endpoints

Compared with others in Otheri

  • More stars than 0% of the other 18600 servers in this category
  • Published to the registry more recently than 83% of the other 18600 servers in this category
  • Basic checks equal to or better than 100% of the other 18600 servers in this category

Compared with every active server in this category in the registry. Stars count only when the publisher owns the repo.

Common questions

Is Cedulon safe?

It passed 1 of 1 applicable basic checks. We have not read the code. Before adding a key or token, see what access the server asks for and use a key with only the permissions you need.

What keys or codes does it need?

The registry does not list a required key, though some servers ask you to sign in on first use.

Does it run on my computer or in the cloud?

It runs on your computer. Your AI app starts it when needed, and data does not pass through the maker’s servers (unless it calls an online service itself).

Is it still maintained?

The GitHub repo last changed –, and the latest version (0.17.0) reached the registry 8 days ago.

Which apps can use it?

Apps that support MCP, such as Claude Desktop, Claude Code, Cursor and VS Code. You also need Node.js on your computer.

What can I use instead?

In the same category: Spec Driven Development, Remote Desktop Commander, alalanet — check before you pay

Alternatives

Servers in the same category from other makers, sorted by stars.

Reading a card:↓ Downloads per weeki★ GitHub starsiThree pillars: reviews · checks · usageiUpdated = latest version published to the registryi

Spec Driven Development

MCP Server that facilitates spec-driven development workflows, not just Vibe Coding.

by formulahendryEarly↓ 66/wk★ 440Updated 14 months ago

Runs on your computer

Remote Desktop Commander

Remote Desktop Commander: use files, terminal and processes on your own computers from any AI app.

by desktop-commanderGrowing★ 211Updated 3 days ago

Runs in the cloud✓ desktopcommander.app

README from the maker

Open the README

Copied from the maker’s repo as written. PopNx MCP has not reviewed or endorsed it. HTML, images and scripts are removed. Links lead off this site.

@cedulon/mcp-server

Local stdio MCP server. Thin wrappers over @cedulon/core, @cedulon/x402-adapter, @cedulon/audit, and @cedulon/receipts. The only non-workspace runtime dependency is the official MCP SDK.

Core packages still carry zero runtime dependencies. This package depends only on those workspace packages plus @modelcontextprotocol/sdk.

Tools

NameWhat it does
cedulon_spendPolicy-gated spend. Args: amount, currency, payee, nonce, tool. Allow → signed receipt JSON. Deny → { ok: false, reason }.
cedulon_auditReconcile the receipt chain against the rail extract: the in-process ledger, or a signed extract you present as extract. Optional extraSettlements injects extract rows (bypass demo; refused beside extract). The result carries scope when it ran over a presented extract, and counts, the class every receipt and row landed in.
cedulon_verify_receiptVerify receipt COSE bytes (receipt object or coseHex + publicKeyPem). Checks countersignature when present.
cedulon_export_ledgerReceipts + checkpoint + extract in the demo:export JSON shape, with the findings, guarantee and counts of the audit over this server's own ledger.
cedulon_statusVersion, policy summary, receipt count, chain head.

Run

The binary is cedulon-mcp (compiled JavaScript, no --experimental-strip-types). From this repository, after npm run build:packages:

node packages/mcp-server/dist/index.js

From the published package, without a clone:

npx -y @cedulon/mcp-server

npx cedulon-mcp is the same binary from a packed or already-installed copy. The server is also listed in the MCP Registry as io.github.dogrucanemek-alt/cedulon.

From the repository source tree (development):

npm run mcp

Host config

Claude Desktop / Claude Code / Cursor (mcpServers), after the package is installed:

{

"mcpServers": { "cedulon": { "command": "npx", "args": ["-y", "@cedulon/mcp-server"] } } }

State and policy

In-process by default. Set CEDULON_STATE_PATH to a JSON file to persist receipts, checkpoints, extract rows, and demo keys across process restarts. Do not commit that file.

Policy knobs (demo defaults in parentheses):

  • CEDULON_MAX_AMOUNT (10)
  • CEDULON_MAX_CUMULATIVE (30)
  • CEDULON_MAX_PAYMENTS (3)
  • CEDULON_WINDOW_MS (3600000)
  • CEDULON_ALLOWED_PAYEES (payee-1; * clears the list)
  • CEDULON_ALLOWED_CURRENCIES (USD; * clears the list)
  • CEDULON_ALLOWED_TOOLS
  • CEDULON_PAYER (payer-1)

The rail is the in-process mock. No wallet, no RPC, no network.

Privacy Policy

https://cedulon.com/privacy.html

The short version, which that page states at length. This server runs on your machine and speaks to your client over stdio. It makes no network requests: this package and the six packages it depends on contain no HTTP client, no socket, and no telemetry, and the only dependency outside the project is the official Model Context Protocol SDK. It collects nothing, because there is no endpoint of ours to collect it.

While it runs it holds, in memory, the spend requests of the session (amount, currency, payee, nonce, calling tool name), the receipts derived from them, the checkpoint, and your policy limits. It writes nothing to disk unless you set CEDULON_STATE_PATH, in which case that ledger is written as JSON to the path you chose, on your machine. No analytics, no crash reporting, no update check, no third-party sharing.

Privacy questions and security reports: .

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